A method for producing a dental restoration wherein a tooth preparation
area is scanned either directly or indirectly. The scanned data is used
by a computer controlled milling machine to create two or more investment
blocks (50, 52, 54) for preparing a suitable dental restoration, the
investment blocks being of a material which may be used in ovens
operating in a 800.degree. to 1,200.degree. C. range. A suitable dental
restorative material (18) and the blocks are place in an oven, and after
being clamped together, the material (18) is pressed or injected into the
investment blocks to form the desired dental restoration. Subsequently,
after cooling, the dental restoration is divested from the investment
mold and finished.